qcacld-3.0: Add driver command to dump function call mapping

Add driver command support to dump all the function call
mapping which is cached in global buffer.

Change-Id: I03b2162ccda171005e6fa8a7bb09cbf9c4819421
CRs-Fixed: 2677976

Kbuild

@@ -733,6 +733,7 @@ QDF_OBJS := \
 	$(QDF_LINUX_OBJ_DIR)/qdf_delayed_work.o \
 	$(QDF_LINUX_OBJ_DIR)/qdf_event.o \
 	$(QDF_LINUX_OBJ_DIR)/qdf_file.o \
+	$(QDF_LINUX_OBJ_DIR)/qdf_func_tracker.o \
 	$(QDF_LINUX_OBJ_DIR)/qdf_idr.o \
 	$(QDF_LINUX_OBJ_DIR)/qdf_list.o \
 	$(QDF_LINUX_OBJ_DIR)/qdf_lock.o \
@@ -3197,6 +3198,8 @@ cppflags-$(CONFIG_ENABLE_SMMU_S1_TRANSLATION) += -DENABLE_SMMU_S1_TRANSLATION
 #Flag to enable/disable MTRACE feature
 cppflags-$(CONFIG_ENABLE_MTRACE_LOG) += -DENABLE_MTRACE_LOG
 
+cppflags-$(CONFIG_FUNC_CALL_MAP) += -DFUNC_CALL_MAP
+
 #Flag to enable/disable Adaptive 11r feature
 cppflags-$(CONFIG_ADAPTIVE_11R) += -DWLAN_ADAPTIVE_11R
 

configs/default_defconfig

@@ -862,6 +862,9 @@ CONFIG_ENABLE_MTRACE_LOG := y
 #Flag to enable nud tracking feature
 CONFIG_WLAN_NUD_TRACKING := y
 
+#Flag to enable/Disable Function call trace
+CONFIG_FUNC_CALL_MAP := n
+
 #Flag to enable wbuff feature
 CONFIG_WLAN_WBUFF := y
 

core/hdd/src/wlan_hdd_ioctl.c

@@ -45,6 +45,7 @@
 #include "hif.h"
 #include "wlan_scan_ucfg_api.h"
 #include "wlan_reg_ucfg_api.h"
+#include "qdf_func_tracker.h"
 
 #if defined(LINUX_QCMBR)
 #define SIOCIOCTLTX99 (SIOCDEVPRIVATE+13)
@@ -6798,6 +6799,69 @@ static int drv_cmd_get_ani_level(struct hdd_adapter *adapter,
 	return 0;
 }
 #endif
+
+#ifdef FUNC_CALL_MAP
+static int drv_cmd_get_function_call_map(struct hdd_adapter *adapter,
+					 struct hdd_context *hdd_ctx,
+					 uint8_t *command,
+					 uint8_t command_len,
+					 struct hdd_priv_data *priv_data)
+{
+	char *cc_buf = qdf_mem_malloc(QDF_FUNCTION_CALL_MAP_BUF_LEN);
+	uint8_t *param;
+	int temp_int;
+
+	param = strnchr(command, strlen(command), ' ');
+	/*no argument after the command*/
+	if (NULL == param)
+		return -EINVAL;
+
+	/*no space after the command*/
+	else if (SPACE_ASCII_VALUE != *param)
+		return -EINVAL;
+
+	param++;
+
+	/*removing empty spaces*/
+	while ((SPACE_ASCII_VALUE  == *param) && ('\0' !=  *param))
+		param++;
+
+	/*no argument followed by spaces*/
+	if ('\0' == *param)
+		return -EINVAL;
+
+	/*getting the first argument */
+	if (sscanf(param, "%d ", &temp_int) != 1) {
+		hdd_err("No option given");
+		return -EINVAL;
+	}
+
+	if (temp_int < 0 || temp_int > 1) {
+		hdd_err("Invalid option given");
+		return -EINVAL;
+	}
+
+	/* Read the buffer */
+	if (temp_int) {
+	/*
+	 * These logs are required as these indicates the start and end of the
+	 * dump for the auto script to parse
+	 */
+		hdd_info("Function call map dump start");
+		qdf_get_func_call_map(cc_buf);
+		qdf_trace_hex_dump(QDF_MODULE_ID_HDD, QDF_TRACE_LEVEL_INFO,
+				   cc_buf, QDF_FUNCTION_CALL_MAP_BUF_LEN);
+		hdd_info("Function call map dump end");
+	} else {
+		qdf_clear_func_call_map();
+		hdd_info("Function call map clear");
+	}
+	qdf_mem_free(cc_buf);
+
+	return 0;
+}
+#endif
+
 /*
  * The following table contains all supported WLAN HDD
  * IOCTL driver commands and the handler for each of them.
@@ -6907,6 +6971,9 @@ static const struct hdd_drv_cmd hdd_drv_cmds[] = {
 	{"SET_DISABLE_CHANNEL_LIST",  drv_cmd_set_disable_chan_list, true},
 	{"GET_DISABLE_CHANNEL_LIST",  drv_cmd_get_disable_chan_list, false},
 	{"GET_ANI_LEVEL",             drv_cmd_get_ani_level, false},
+#ifdef FUNC_CALL_MAP
+	{"GET_FUNCTION_CALL_MAP",     drv_cmd_get_function_call_map, true},
+#endif
 	{"STOP",                      drv_cmd_dummy, false},
 	/* Deprecated commands */
 	{"RXFILTER-START",            drv_cmd_dummy, false},

core/hdd/src/wlan_hdd_main.c

@@ -161,6 +161,8 @@
 #include "wlan_mlme_ucfg_api.h"
 #include "wlan_fwol_ucfg_api.h"
 #include "wlan_policy_mgr_ucfg.h"
+#include "qdf_func_tracker.h"
+
 #ifdef CNSS_GENL
 #include <net/cnss_nl.h>
 #endif
@@ -6468,6 +6470,36 @@ hdd_peer_cleanup(struct hdd_context *hdd_ctx, struct hdd_adapter *adapter)
 		hdd_debug("peer_cleanup_done wait fail");
 }
 
+#ifdef FUNC_CALL_MAP
+
+/**
+ * hdd_dump_func_call_map() - Dump the function call map
+ *
+ * Return: None
+ */
+
+static void hdd_dump_func_call_map(void)
+{
+	char *cc_buf;
+
+	cc_buf = qdf_mem_malloc(QDF_FUNCTION_CALL_MAP_BUF_LEN);
+	/*
+	 * These logs are required as these indicates the start and end of the
+	 * dump for the auto script to parse
+	 */
+	hdd_info("Function call map dump start");
+	qdf_get_func_call_map(cc_buf);
+	qdf_trace_hex_dump(QDF_MODULE_ID_HDD,
+		QDF_TRACE_LEVEL_INFO, cc_buf, QDF_FUNCTION_CALL_MAP_BUF_LEN);
+	hdd_info("Function call map dump end");
+	qdf_mem_free(cc_buf);
+}
+#else
+static inline void hdd_dump_func_call_map(void)
+{
+}
+#endif
+
 QDF_STATUS hdd_stop_adapter(struct hdd_context *hdd_ctx,
 			    struct hdd_adapter *adapter)
 {
@@ -6784,6 +6816,8 @@ QDF_STATUS hdd_stop_adapter(struct hdd_context *hdd_ctx,
 		adapter->scan_info.default_scan_ies_len = 0;
 	}
 
+	/* This function should be invoked at the end of this api*/
+	hdd_dump_func_call_map();
 	hdd_exit();
 
 	return QDF_STATUS_SUCCESS;
@@ -8456,6 +8490,9 @@ void hdd_wlan_exit(struct hdd_context *hdd_ctx)
 #ifdef FEATURE_WLAN_CH_AVOID
 	mutex_destroy(&hdd_ctx->avoid_freq_lock);
 #endif
+
+	/* This function should be invoked at the end of this api*/
+	hdd_dump_func_call_map();
 }
 
 /**